Pavel Stehule <stehule@kix.fsv.cvut.cz> writes:
> if I use registered sqlstate, plpgsql knows text message.
No, it does not. I already pointed out that tying a single error
message to a SQLSTATE is unreasonable, because that's not how the
SQL committee intended SQLSTATEs to be used. I haven't looked at
this patch yet, but if it's doing things that way it is wrong.
regards, tom lane